Tunturi ALPHA 200 - Manual (Page 6)

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2.2 Operation keys
Operation keys are used to direct a particular function and are located to
the left of the display. When an operation key is active, an info-label is
displayed to the right of the key.
2.3 Setting keys
Setting keys are situated to the right of the display. They are used to set
the values and characters on-screen. Symbols on the display for the active
arrow keys show which you can use to adjust values or navigate.
2.4 Brake keys
The brake keys (+/-) are located beneath the display. They are used to
adjust resistance during constant brake and constant effort workouts in
Training function.